<span class="md-button-wrapper"><ng-content></ng-content></span>
<div md-ripple *ngIf="!_isRippleDisabled()" class="md-button-ripple"
    [class.md-button-ripple-round]="isRoundButton()"
    [md-ripple-trigger]="getHostElement()"
    [md-ripple-color]="isRoundButton() ? 'rgba(255, 255, 255, 0.2)' : ''"
    md-ripple-background-color="rgba(0, 0, 0, 0)"></div>
<!-- the touchstart handler prevents the overlay from capturing the initial tap on touch devices -->
<div class="md-button-focus-overlay" (touchstart)="$event.preventDefault()"></div>
